device/bluetooth/bluetooth_discovery_manager_mac.h

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef DEVICE_BLUETOOTH_BLUETOOTH_DISCOVERY_MANAGER_MAC_H_
   6 #define DEVICE_BLUETOOTH_BLUETOOTH_DISCOVERY_MANAGER_MAC_H_
   7
   8 #include "base/macros.h"
   9
  10 @class IOBluetoothDevice;
  11
  12 namespace device {
  13
  14 // Class used by BluetoothAdapterMac to manage classic and LE device discovery.
  15 // For Bluetooth Classic, this class is responsible for keeping device inquiry
  16 // running if device discovery is initiated.
  17 class BluetoothDiscoveryManagerMac {
  18  public:
  19   // Interface for being notified of events during a device discovery session.
  20   class Observer {
  21    public:
  22     // Called when |this| manager has found a device through classic device
  23     // inquiry in the form of an IOBluetoothDevice.
  24     virtual void DeviceFound(IOBluetoothDevice* device) = 0;
  25
  26     // Called when device discovery is no longer running, due to either a call
  27     // to BluetoothDiscoveryManagerMac::StopDiscovery or an unexpected reason,
  28     // such as when a user disables the controller, in which case the value of
  29     // |unexpected| will be true.
  30     virtual void DiscoveryStopped(bool unexpected) = 0;
  31
  32    protected:
  33     virtual ~Observer() {}
  34   };
  35
  36   virtual ~BluetoothDiscoveryManagerMac();
  37
  38   // Returns true, if discovery is currently being performed.
  39   virtual bool IsDiscovering() const = 0;
  40
  41   // Initiates a discovery session. Returns true on success or if discovery
  42   // is already running. Returns false on failure.
  43   virtual bool StartDiscovery() = 0;
  44
  45   // Stops a discovery session. Returns true on success or if discovery is
  46   // already not running. Returns false on failure.
  47   virtual bool StopDiscovery() = 0;
  48
  49   // Creates a discovery manager for Bluetooth Classic device discovery with
  50   // observer |observer|. Note that the life-time of |observer| should not
  51   // end before that of the returned BluetoothDiscoveryManager, as that may
  52   // lead to use after free errors.
  53   static BluetoothDiscoveryManagerMac* CreateClassic(Observer* observer);
  54
  55  protected:
  56   explicit BluetoothDiscoveryManagerMac(Observer* observer);
  57
  58   // Observer interested in notifications from us.
  59   Observer* observer_;
  60
  61  private:
  62   DISALLOW_COPY_AND_ASSIGN(BluetoothDiscoveryManagerMac);
  63 };
  64
  65 }  // namespace device
  66
  67 #endif  // DEVICE_BLUETOOTH_BLUETOOTH_DISCOVERY_MANAGER_MAC_H_